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The process of allocating memory at runtime, as opposed to during the compilation of a program. This is done using the functions malloc(), calloc(), and realloc() from the standard C library.
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Dynamic memory allocation is the process of allocating and deallocating memory at runtime in a program. It allows the program to request and manage memory as needed. Dynamic memory allocation allow the program to allocate memory from the heap and provides flexibility in managing memory resources.
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Dynamic memory allocation means that memory is stored at runtime rather than at compile time. It gives the program the ability to request a block of memory at runtime if it actually needs one. In languages such as C and C++ this is done using functions like malloc(), calloc(), or realloc(). Memory allocated in dynamic memory allocation can also be resized or freed in the runtime of the application. It provides flexibility, but care must be taken lest one falls into memory leaks. Unused memory must always be explicitly freed with free() lest one wastes some memory.